Pen for recording apparatus



June 16, 1925. 1,541,950

H. w. H EESCH PEN FOR RECORDING APPARATUS Filed Oct. 29, 1922's 4 INVENTOR. 1797273 W feesch -zls ATTORNEY PATENT OFFICE.

HENRY w. HEESCH, or ROCHESTER,

mam commnms, or aocnasrsa,

NEW YORK, ASSIGNOR TO THE TAYLORINSTRU- NEW YORK, A CORPORATION OF NEW YORK.

PEN FOR nncomjme arraas'rus.

Application filed October 29, 1923.. -Serial No. 671,456.

T 0 all whom it may cmwern:

Be it known that I, HENRY \V. Henson, a citizen of the United States, residing at Rochester, in the county of Monroe and State of New York, have invented certain new and useful Improvements in Pens for Recording Apparatus; and I do hereby declare the following to be a full, clear, and exact description of the same, reference being had to the accompanying drawings, formin a part of this specification, and to the re erence numerals marked thereon.

This invention relates to pens particularly adapted for recording apparatus such for example as pressure or temperature recording instruments, one object of the invention being to provide a construction ca able of being manufactured at a low cost. ore specifically stated, it is an object of the invention toprovide a pen of improved ink retaining and marking qualities and of a rigid and. durable construction adapted to be readily attached to and removed from a pen arm.

To these and other ends the invention resides in certainimprovements. and combinations of parts all as will hereinafter more fully described, the novel features being pointed out in the claims at the endof thev specification.

In the drawings;

Fig. 1 is a side elevation of a pen embodying the present invention and shown as attached to a pen arin. i

Fig. 2 is a front elevation of the same.

Fig. 3 is a rear elevation of the same and Fig. 4 is a top plan view.

Similar reference numerals throughout the several views indicate the same parts.

The embodiment of the invention. herein disclosed by .way of illustration comprises improvements in the ink receiving or reservoir portion of the pen and also in the means for supporting the same on the pen arm and in the present instance the device is stamped up integrally from a single blank of sheet metal with the advanta s of economy in manufacture and durability in use. The portion of the blank for the reservoir is suitably shaped and stamped inwardly or dished as shown to .provide for the reservoir a rear wall 5 integrally joined with side walls 6; The latter conver'ge toward the front and bottom of the in to form a writing point 7 and enclose be ween them a channel which,

'i nk in a fine line pen of simple and efficient the present instance adjacent the writing point, is'reduced to capillary dimensions by folding the metal closely upon itself at the bottom of the channel with the sides curving upwardly and outwardly as shown at 8, in'l ig. 2. The forward edges of the side walls 6 are cut at an angle preferably somewhat acute with the bottom of the channel to render the latter pointed at its forward writing end. There 18 thus produced a reservoir portion of substantial capacitywithintegrally joined Walls and an ink feeding-channel of capillary size at the point of the pen adaptedto apply the without excessive flow.

As already stated, the means for supporting the pen, or, in other words, the shank portion, is constructed integrally with the reservoir portion, comprising,

as shown from the top of the rear wall 5,

in forms of the-device where the'pen issup- 10 and is preferably stamped up with a cen 11 which extends in longitudinally of the strip and downwardly across the rear wall 5 of the reservoir, as at 12, adjacent the bottral reinforcing rrby tom of the channel, for giving to the rear wall and the shank portion the desired strength and rigidity. I

The end 10 of the shank is preferably provided with laterally extending marginal portions 13 on either side of the stiffening ri-b 11 whichmarginal portions are folded as at 14 to form a socket for the reception of a support or arm.. The latter being in the resent instance in the form of the well nown spring strip 15, the marginal poltions are accordingly folded parallel with and in close proximity with themain body of thestrip adjacent the rib to provide a narrow socket adapted to closely fit the sup-. rting arm 15. The latter may be conveniently constructed with a. rounded end 16 of reduced width providing shoulder portions 17 and the sides of the socket may be slightly indented asat 18 to limit theinsertion of the supporting arm which snugly fits the socket and securely holds the pen. To facilitate the insertion of the arm in its socket one side of the latter, as for example, the folded marginal portions 13, may be slightly ex tended as at 19 to guide the rounded end of preferably, a strip 9 curvingrearwardly and downwardly.

the pen arm into registry with the socket opening during attachment of the,pen

lVhiie the rib 11 serves as stated to stiifen the shank as a whole, it has the additional function of supplying a resilient connection between the marginal folds forming the sides of the socket so that the latter yieldably receive and frictionally grip the sup porting arm.

The invention thus provides a pen having a reservoir portion of an eiiicient character with a durably connected supporting mem her or shank of a strong and rigid nature formed to provide an effective means for attaching the same to supporting arm, the whole being economically stamped up from a single blank of sheet metal in a simple manner capable of being accomplished by practical "manufacturing equipment and methods.

I claim as my invention:

1. In a pen, a reservoir portion comprising a rear wall and converging side walls forming between them an ink feeding channel having a writing point at the forward end thereof, and a shank extending from the rear of said reservoir comprising a strip bent marginally upon itself to provide a socket for the reception of a pen support.

2. In a pen, a reservoir portion comprising a rear wall and converging side walls forming between them an ink feeding channel having a writing point at the forward end thereof, and a shank extending from the rear of said reservoir comprising a strip having a central stiffening rib with the margins of the strip at the sides of said rib bent inwardly upon themselves to form a socket for the reception of a pen support.

3. In a pen, a reservoir portion comprising a rear wall and converging side walls forming between them an ink feeding channel having a Writing point at its forward end, and a shank portion extending integrally from said rear wall and formed to provide a socket for the reception of a pen support.

4:. In a pen, a reservoir portion comprising a rear wall and converging side walls forming between them an ink feeding channel having a writing point at its forward end and a shank portion comprising a strip extending integrally from said rear wall with a central stiffening rib and marginal portions on either side thereof folded upon themselves to provide a socket for detachably receiving a pen support.

5.- A pen-constructed of single blank of sheet metal formed to provide a reservoir portion having a rear wall and side walls enclosing therebetween an ink feeding channel having a pointed writing end, and a shank strip extending from the top of said rear wall and formed to provide a socket for detachably receiving a pen support. 4 6. A pen constructed of a single blank of sheet metal formed to provide a reservoir portion having a rear wall and side walls enclosing thorebetween an ink feeding channel having a pointed writing end, and a shank strip extending from the top of said rear wall and having a longitudinal slitfening rib with the marginal portions at the sides thereof folded upon themselves to provide a socket for a pen support.

7. A pen constructed of a single blank of sheet metal having a portion thereof dished to form a reservoir comprising a rear wall and converging side walls forming between them at the bottom a capillary ink feeding channel with a writing point at its forward end, and a shank strip extending from the top of said rear wall having a longitudinal stiffening rib formed therein and in said rear wall with marginal portions of said strip folded to produce a socket for the reception of a pen supporting arm.

8. A pen constructed of a single blank of sheet metal having a portion thereof dished to form a reservoir com rising a rear wall and converging side wal s forming between them at thebottom a capillary ink feeding channel with a writing point at its forward end, a shank strip curving rearwardly and downwardly from the top of said rear wall with a straight extension having the marginal portions thereof folded inwardly to provide a socket for asupporting arm, and a rib formed across said rear wall and longitudinally of said shank strip to stifl'en the same and provide a resilient connection between said marginal socket portion.

HENRY W. HEESCH. 

